Can I Pour Concrete In Cold Weather?

When pouring concrete in cold weather it can present challenges that need to be carefully addressed to ensure a durable and successful outcome for your concrete.

Cold and low temperatures can significantly impact the curing process which can result in the integrity and strength of the concrete being compromised if not handled properly.

Slower Curing

Cold weather conditions can significantly slow down the hydration process, which leads to insufficient or delayed curing.

This can then result in weaker concrete and reduced strength.

Frost Damage

When temperatures hit freezing point, it can cause the water within the concrete to freeze, resulting in potential cracking and expansion.

Reduced Workability

Cold weather also affects the workability of concrete, making it harder to place, handle and also lead to premature setting, making it challenging to achieve the desired finish.

Do's -

Monitor the weather conditions to ensure the temp remains above freezing for a sufficient amount of time during and after pouring.
Ensure the ground is adequately prepared and the site is clear of snow, debris and ice.
If possible warm the site up using temporary heating systems or enclosures to raise the temp on site before pouring.
Consult with professionals to determine the appropriate mix for cold weather conditions, this may include increasing cement amount or adding additives to help with curing.

Dont's -

Avoid rushing the placement and finishing of the concrete. Take your time to allow adequate curing and strength development.
While accelerators can be beneficial during cold weather, over using them can cause other complications such as rapid setting or decreased overall strength.
Never pour directly over frozen ground. Ensure it is properly prepared and thaw the ground before pouring.